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Combined graphometer and plummet clinometer, 1663.

1663

Spirit level graphometer, German, 1870-1876

1870-1876

Graphometer, British, 1851-1900

1851-1900

Graphometer-clinometer by Phillippe Danfrie

1597-1603

Graphometer by Richer of Paris, late 19th century

1871-1900

Azimuth variation, European 1601-1700

1601-1700

Graphometer, Italian, 1691-1744

1691-1744

Graphometer with magnetic compass

1710-1720

Graphometer, for surveying

Graphometer by Cadot a Lion, Lyon, France, 1753

Graphometer, French, 1753

1753

Graphometer, possibly Italian, 1701-1800

Graphometer, Italian (?), 1701-1800

1701-1800

Brass graphometer with magnetic compass, fixed and movable alidade and wooden case, unsigned, European, 1701-1775

Graphometer, European, 1701-1775

1701-1800

Graphometer by Joducus Deens of Belgium, 1682

Graphometer, Flemish, 1682

1682

Graphometer made by the railway engineer Robert Stephenson, Newcastle upon Tyne, England, 1819-1821

Graphometer by engineer Robert Stephenson, British, 1819-1821

1819-1821

Graphometer, unsigned, European, 1780-1820

Graphometer, European, 1780-1820

1780-1820

Graphometer by Briere, Paris, 1780-1879

Graphometer, French, 1780-1789

1780-1789